Lewis County, TN Climate

Lewis, TN County has a moderate climate throughout the year. The summers are hot and humid, while the winters are slightly cooler and drier. Precipitation is abundant throughout all seasons, with the spring and fall months receiving significantly more rainfall than the summer or winter months. Average temperatures throughout the year range from lows in the mid-30s to highs in the 80s. Snowfall is light, usually only occurring between November and March. This mild climate makes Lewis an ideal place for outdoor activities such as camping, hiking, fishing, and more.

Lewis County, Tennessee gets 56 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lewis County averages 3 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 206 sunny days per year in Lewis County. The US average is 205 sunny days.

Lewis County gets some kind of precipitation, on average, 103 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 90 degrees
Winter Low: the January low is 26
Rain: averages 56 inches of rain a year
Snow: averages 3 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Lewis County is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

7 Summer - 6.3 Winter

September, May and October are the most pleasant months in Lewis County, while January and December are the least comfortable months.

Climate	Lewis, Tennessee	United States
	Unlock	38.1 in.
	2.6 in.	Unlock
	Unlock	106.2 days
	206 days	Unlock
	89.5°	85.8°
	Unlock	21.7°
	7.4	Unlock
	Unlock	4.3
	844 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Lewis County with an average high temperature of 89.5°, which ranks it as warmer than most places in Tennessee. In Lewis County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lewis County are May, October and September.

In Lewis County, there are 41.0 days annually when the high temperature is over 90°, which is hotter than most places in Tennessee.

January has the coldest nighttime temperatures for Lewis County with an average of 25.9°. This is colder than most places in Tennessee.

In Lewis County, there are 88.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Tennessee.

In Lewis County, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Tennessee.

Humidity in Lewis County can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.

May is the wettest month in Lewis County with 6.2 inches of rain, and the driest month is August with 3.4 inches. The wettest season is Summer with 29% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 56.2 inches in Lewis County means that it is wetter than most places in Tennessee.

May is the rainiest month in Lewis County with 9.9 days of rain, and September is the driest month with only 6.4 rainy days. There are 102.7 rainy days annually in Lewis County, which is one of the least rainy places in Tennessee. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 2.6 inches in Lewis County means that it is less snowy than most places in Tennessee. January is the snowiest month in Lewis County with 1.0 inches of snow, and 3 months of the year have significant snowfall.

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